<template>
    <div>
      <div>
        <el-input style="width: 200px;margin-right: 20px;" placeholder="查询文件名称" v-model="name"></el-input>
        <el-input style="width: 200px" placeholder="查询类型" v-model="type"></el-input>
        <!-- <el-select v-model="type" clearable placeholder="请选择">
            <el-option
              v-for="item in options"
              :key="item.value"
              :label="item.label"
              :value="item.value">
            </el-option>
          </el-select> -->
        <el-button type="primary" style="margin-left: 10px" @click="load(1)">查询</el-button>
        <el-button type="info" @click="reset">重置</el-button>
      </div>
      <div style="margin: 10px 0">
        <el-button type="primary" plain @click="handleAdd">新增</el-button>
        <el-button type="danger" plain @click="delBatch">批量删除</el-button>
      </div>
      <el-table :data="tableData" stripe :header-cell-style="{ backgroundColor: 'aliceblue', color: '#666' }" @selection-change="handleSelectionChange">
        <el-table-column type="selection" width="55" align="center"></el-table-column>
        <el-table-column prop="id" label="序号" width="70" align="center"></el-table-column>
        <el-table-column prop="name" label="文件名称"></el-table-column>
        <el-table-column prop="type" label="类型"></el-table-column>
        <el-table-column prop="address" label="地址">
          <template v-slot="scope">
                <el-button v-if="scope.row.address" type="success" @click="preview(scope.row.address)" >下载</el-button>
            </template>
        </el-table-column>
        <!-- <el-table-column prop="user" label="发布人"></el-table-column> -->
        <el-table-column label="操作" align="center" width="180">
          <template v-slot="scope">
            <el-button size="mini" type="primary" plain @click="handleEdit(scope.row)">编辑</el-button>
            <el-button size="mini" type="danger" plain @click="del(scope.row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <div style="margin: 10px 0">
        <el-pagination
            @current-change="handleCurrentChange"
            :current-page="pageNum"
            :page-size="pageSize"
            layout="total, prev, pager, next"
            :total="total">
        </el-pagination>
      </div>
  
      <el-dialog title="文件信息" :visible.sync="fromVisible" width="40%" :close-on-click-modal="false">
        <el-form :model="form" label-width="80px" style="padding-right: 20px" :rules="rules" ref="formRef">
          <el-form-item label="文件名称" prop="name">
            <el-input v-model="form.name" placeholder="文件名"></el-input>
          </el-form-item>
          <el-form-item label="类型" prop="type">
            <el-input v-model="form.type" placeholder="类型" style="width: 50%;"></el-input>
            <!-- <el-select v-model="form.type" clearable placeholder="请选择">
            <el-option
              v-for="item in options"
              :key="item.value"
              :value="item.value">
            </el-option>
          </el-select> -->
          </el-form-item>
          <el-form-item label="附件">
                <el-upload
                    class="annexes-uploader"
                    ref="upload"
                    action="http://localhost:9090/file/upload"
                    :headers="{token: user.token}"
                    :on-success="handleAnnexesSuccess"
                    :on-change="handleChange"
                    :file-list="fileList"
                    >
                    <el-button type="primary">上传附件</el-button>
                </el-upload>
            </el-form-item>
        </el-form>
  
        <div slot="footer" class="dialog-footer">
          <el-button @click="fromVisible = false">取 消</el-button>
          <el-button type="primary" @click="save">上 传</el-button>
        </div>
      </el-dialog>
  
    </div>
  </template>
  
  <script>
  
  export default {
    name: "Notice",
    data() {
      return {
        tableData: [],  // 所有的数据
        pageNum: 1,   // 当前的页码
        pageSize: 5,  // 每页显示的个数
        username: '',
        name: '',
        total: 0,
        fromVisible: false,
        form: {},
        fileList:[],
        user: JSON.parse(localStorage.getItem('honey-user') || '{}'),
        rules: {
          name: [
            { required: true, message: '请输入文件名称', trigger: 'blur' },
          ],
          type: [
            { required: true, message: '请选择类型', trigger: 'blur' },
          ]
        },
        ids: [],
        type: '',
        // options: [{
        //   value: '项目申报书模版',          
        // }, {
        //   value: '项目计划书模版',         
        // }, {
        //   value: '项目开题报告模版',          
        // }, {
        //   value: '项目中期检查模版',          
        // }, {
        //   value: '项目结题报告模版',          
        // }],
      }
    },
    created() {
      this.load()
    },
    methods: {
      handleChange(file, fileList) {
        this.fileList = fileList;
      },
      preview(url){
            window.open(url)
        },
      delBatch() {
        if (!this.ids.length) {
          this.$message.warning('请选择数据')
          return
        }
        this.$confirm('您确认批量删除这些数据吗？', '确认删除', {type: "warning"}).then(response => {
          this.$request.delete('/documents/delete/batch', { data: this.ids }).then(res => {
            if (res.code === '200') {   // 表示操作成功
              this.$message.success('操作成功')
              this.load(1)
            } else {
              this.$message.error(res.msg)  // 弹出错误的信息
            }
          })
        }).catch(() => {})
      },
      handleSelectionChange(rows) {   // 当前选中的所有的行数据
        this.ids = rows.map(v => v.id)
      },
      del(id) {
        this.$confirm('您确认删除吗？', '确认删除', {type: "warning"}).then(response => {
          this.$request.delete('/documents/delete/' + id).then(res => {
            if (res.code === '200') {   // 表示操作成功
              this.$message.success('操作成功')
              this.load(1)
            } else {
              this.$message.error(res.msg)  // 弹出错误的信息
            }
          })
        }).catch(() => {})
      },
      handleEdit(row) {   // 编辑数据
        this.form = JSON.parse(JSON.stringify(row))  // 给form对象赋值  注意要深拷贝数据
        this.fromVisible = true   // 打开弹窗
      },
      handleAdd() {   // 新增数据
        this.form = {}  // 新增数据的时候清空数据
        this.fileList = [];  // 设置为空数组
        this.fromVisible = true   // 打开弹窗
        
      },
      save() {   // 保存按钮触发的逻辑  它会触发新增或者更新
        this.$refs.formRef.validate((valid) => {
          if (valid) {
            this.sendSaveRequest()
          }
        })
      },
      handleAnnexesSuccess(response ,file ,fileList){
              //把附件属性换成上传附件的连接
              this.form.address = response.data
          },
      sendSaveRequest() {
        this.$request({
          url: this.form.id ? '/documents/update': '/documents/add',
          method: this.form.id ? 'PUT' : 'POST',
          data: this.form
        }).then(res => {
          if (res.code === '200') {  // 表示成功保存
            this.$message.success('保存成功')
            this.load(1)
            this.fromVisible = false
          } else {
            this.$message.error(res.msg)  // 弹出错误的信息
          }
        })
      },
      reset() {
        this.name = ''
        this.type = ''
        this.load()
      },
      load(pageNum) {  // 分页查询
        if (pageNum)  this.pageNum = pageNum
        this.$request.get('/documents/selectByPage', {
          params: {
            pageNum: this.pageNum,
            pageSize: this.pageSize,
            name: this.name,
            type: this.type
          }
        }).then(res => {
          this.tableData = res.data.records
          this.total = res.data.total
        })
      },
      handleCurrentChange(pageNum) {
        this.load(pageNum)
      },
    }
  }
  </script>
  
  <style>

  </style>